1. Chemical Reactions By: turtlman001

2. Types of Chemical Reactions There are 5 types of chemical reactions : There are 5 types of chemical reactions : Synthesis Synthesis Decompostition Decompostition Single Replacement Single Replacement Double Replacement Double Replacement Combustion Combustion

3. Synthesis In a synthesis reaction two or more substances combine to make one product In a synthesis reaction two or more substances combine to make one product So a Reactant + Reactant = Product So a Reactant + Reactant = Product An example of a synthesis reaction is Na + Cl = NaCl An example of a synthesis reaction is Na + Cl = NaCl http://exploscience.com/ChemTV_Page2.html

4. Decomposition In a decomposition reaction one substance becomes two or more products In a decomposition reaction one substance becomes two or more products So a Reactant = Product + Product So a Reactant = Product + Product An example of Decomposition is H2O = 2H + O An example of Decomposition is H2O = 2H + O http://www.usoe.k12.ut.us/curr/scienc e/sciber00/8th/matter/sciber/chemtyp e.htm

5. Single Replacement In a single replacement reaction one element switches with another one in a compound. In a single replacement reaction one element switches with another one in a compound. You can think this at a dance when a couple is together and one person takes the place of one date and there is a new couple and one lonely person. You can think this at a dance when a couple is together and one person takes the place of one date and there is a new couple and one lonely person. So AB + X = BX + A So Reactant + Reactant = Product + Product So AB + X = BX + A So Reactant + Reactant = Product + Product An example of a Single replacement reaction is Mg + 2HCl which equals MgCl + H2 An example of a Single replacement reaction is Mg + 2HCl which equals MgCl + H2

6. Double Replacement In a double replacement reaction two parts of a compound switch to form two new compounds In a double replacement reaction two parts of a compound switch to form two new compounds This is like when two couples go to a dance and one person out of each couple switch to get to new couples This is like when two couples go to a dance and one person out of each couple switch to get to new couples So Reactant + Reactant = Product + Product So Reactant + Reactant = Product + Producthttp://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/chemtype.htm

7. Combustion In a combustion reaction between a fuel substance and oxygen and an activation energy In a combustion reaction between a fuel substance and oxygen and an activation energy Oxygen is always involved in a combustion reaction Oxygen is always involved in a combustion reaction This is an exothermic reaction This is an exothermic reaction This reaction usually creates heat and light This reaction usually creates heat and light An example of combustion is when you have a wood fire the wood is the fuel and the activation energy is a match and the oxidant is oxygen An example of combustion is when you have a wood fire the wood is the fuel and the activation energy is a match and the oxidant is oxygen

8. Chemical Reaction Basics The part of an atom affected by a chemical reaction is the electron The part of an atom affected by a chemical reaction is the electron In a chemical reaction bonds are constantly being created and broke and chemicals may changed and energy is being absorbed or given off In a chemical reaction bonds are constantly being created and broke and chemicals may changed and energy is being absorbed or given off Reactants are the chemicals that are creating the reaction and that’s why they are the reactants, Products are what the reactants have made when the reaction is over Reactants are the chemicals that are creating the reaction and that’s why they are the reactants, Products are what the reactants have made when the reaction is over The law of conservation of mass applies to chemical reactions by that matter can not be created nor destroyed although it may be rearranged, also the reactants must equal the products at the end of the reaction it might just be in different states The law of conservation of mass applies to chemical reactions by that matter can not be created nor destroyed although it may be rearranged, also the reactants must equal the products at the end of the reaction it might just be in different states Some signs that a chemical reaction is happening is bubbles, heat, coldness, light, and change of color Some signs that a chemical reaction is happening is bubbles, heat, coldness, light, and change of color http://search.msn.com/images/results.aspx?q=magnesium+burning&FORM= MSNH#focal=91ee5af2add17a3469214946f7725e90&furl=http%3A%2F%2F catalog.miniscience.com%2Fcatalog%2Fmetals%2FImages%2FMagnesium_ burning.jpg Magnesium Burning

9. Exothermic and Endothermic Reactions An exothermic reaction is when the energy being used is less then what the whole reaction, so this means that the extra energy is usually released as light, heat, and sometimes sound An exothermic reaction is when the energy being used is less then what the whole reaction, so this means that the extra energy is usually released as light, heat, and sometimes sound An endothermic reaction is when the energy being used is greater then the reaction, so this means that the reaction absorbs energy in the form of getting colder An endothermic reaction is when the energy being used is greater then the reaction, so this means that the reaction absorbs energy in the form of getting colder An example of an exothermic reaction is Na + Cl = NaCl in this reaction heat and light is created An example of an exothermic reaction is Na + Cl = NaCl in this reaction heat and light is created An example of an endothermic reaction is when Barium hydroxide and Ammonium nitrate are added together they form Barium nitrate and ammonia gas and water An example of an endothermic reaction is when Barium hydroxide and Ammonium nitrate are added together they form Barium nitrate and ammonia gas and water A thermite reaction using iron (ll) oxide. An exothermic reaction http://en.wikipedia.org/wiki/Exothermic_reaction http://en.wikipedia.org/wiki/Exothermic_reaction http://www.youtube.com/watch?v=GmiZ0huvZzs

10. Energy and Chemical Reactions In a chemical reaction the role that energy plays is when a chemical reaction is playing out energy is needed to create bonds and break bonds, also energy is given off in light, heat, coldness, bubbles In a chemical reaction the role that energy plays is when a chemical reaction is playing out energy is needed to create bonds and break bonds, also energy is given off in light, heat, coldness, bubbles In a chemical reaction activation energy is the energy that must be overcome in order for a reaction to occur or the minimum energy to start a chemical reaction In a chemical reaction activation energy is the energy that must be overcome in order for a reaction to occur or the minimum energy to start a chemical reaction In a chemical reaction chemical potential energy is arrangement of atoms or molecules, in these arrangements may result in bonds being created In a chemical reaction chemical potential energy is arrangement of atoms or molecules, in these arrangements may result in bonds being created

11. Bibliography Bibliography Activation energy: http://en.wikipedia.org/wiki/potential_energy#chemical_potential_energy http://en.wikipedia.org/wiki/potential_energy#chemical_potential_energy Chemical Reaction Basics: http://www.usoe.k12.ut.us/CURR/Science/scriberoo/8 th /Matter/scriber/chemtype.htm Energy & Chemical reactions: http://www.infoplease.com/ce6/sci/a0802389.html http://www.infoplease.com/ce6/sci/a0802389.html Types of Chemical reactions: http://www.morymount.k12.ny.us/marynet/stwbwkos/j5flashchemtion/avreact/avreaction/html http://www.morymount.k12.ny.us/marynet/stwbwkos/j5flashchemtion/avreact/avreaction/html http://exploscience.com/ChemTV_Page2.html http://search.msn.com/images/results.aspx?q=magnesium+burning&FORM=MSNH#focal=91ee5af2add17a3469214946f7725e90&furl=http%3A%2F%2Fcatal og.miniscience.com%2Fcatalog%2Fmetals%2FImages%2FMagnesium_burning.jpg http://en.wikipedia.org/wiki/Exothermic_reaction http://www.youtube.com/watch?v=GmiZ0huvZzs